BIOLOGY
CHAPTER-SEXUAL REPRODUCTION IN FLOWERING PLANTS
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PART A
1. Apomixis is –
A) Fruit without fertilization
B) Seed without fertilization
C) Plant without fertilization
D) none of these
2. Apomixis is found in –
A) Solanaceae
B) Liliaceae
C) Asteraceae
D) Brassicaceae
3. Mango contains –
A) Multiple ovaries in a flower
B) Multiple ovules in an ovary
C) Multiple embryos in an ovule
D) none of these
4. In angiosperm, pollination and fertilization are –
A) Both independent of water
B) Both dependent of water
C) Only pollination is essentially on water
D) Only fertilization is dependent on water
5. The given figure shows –
A) Eucarp of apple and lithi
B) Pseudocarp of apple litchi
C) Eucarp of apple and strawberry
D) Pseudocarp of apple and strawberry
6. Identify scutellum in the given figure –
A) I
B) II
C) III
D) IV
7. Identify cotyledon in the given figure of seed
A) I
B) II
C) III
D) IV
8. Which of these is incorrect about Parthenocarpy
A) Plant formed without fertilization
B) Banana is example
C) Induced by application of growth hormones
D) Such fruits are seed less
9. In false fruits, select incorrect statement
A) Floral parts other than ovary are involved
B) Thalamus may contribute to fruit formation
C) Examples include apple, cashew, groundnut
D) Fruit does not develop from ovary
10. Choose the correct match regarding the maturing of flower into fruit
A) Wall of ovule – pericarp
B) Nucellus – periderm
C) Ovary – seed
D) None of these
11. Mature seed has
A) More water content and more metabolism
B) Less water content and more metabolism
C) Less water content and less metabolism
D) More water content and more metabolism
12. Groundnut is
A) Albuminous
B) Non-albuminous
C) Has residual endosperm in mature seed
D) None of these
13. Perisperm is
A) Persistent nucleus B) Found in beet
C) Residual endosperm D) None of these
14. Integument of ovules mature into
A) Ovary wall B) Pericarp C) Seed coat D) Perisperm
15. Micropyle is
A) Absent in seed B) Present inside seed
C) Present on surface of seed D) Present on seed coat
16. Coleoptile is
A) hollow structure B) solid structure
C) sometimes hollow and sometimes solid structure D) semi-solid
17. Coleorhiza is
A) hollow structure B) foliar structure
C) undifferentiated sheath D) None of these
18. In grass family, the scutellum is
A) Cotyledon B) Root tip C) Epiblast D) Shot tip
19. Choose the correct order of embryo development in dicots-
(i) Zygote
(ii) Heart-shaped embryo
(iii) Mature embryo
(iv) Proembryo
(v) Globular embryo
A) i-iv-ii-v-ii B) i-iv-ii-v-iii C) i-iv-iii-ii-v D) i-iv-v-ii-iii
20. Endosperm persists in mature seeds in
A) Castor B) Pea C) Beans D) None of these
21. In free-nuclear endosperm
A) PEN undergoes successive nuclear divisions
B) PEC undergoes successive cellular divisions
C) PEN undergoes successive cellular divisions
D) All of these
22. Endosperm tissue is
A) Haploid
B) Diploid
C) Triploid
D) Tetraploid
23. The figure shows stages in
A) Embryo development in dicot
B) Embryo development in monocot
C) Embryo development in gymnosperm
D) Both A and B
24. Identify the correct labels.
(i) (ii) (iii)
A) Zygote PEN Degenerating antipodals
B) Zygote PEC Degenerating antipodals
C) Zygote PEN Degenerating synergids
D) Zygote PEC Degenerating synergids
25. Central cell after double fertilization becomes
A) Zygote
B) PEN
C) PEC
D) Embryo
26. Triple fusion is
A) Fusion of third male gamete with polar nuclei
B) Fusion of three haploid cells
C) Fusion of second male gamete with egg cell
D) Fusion of three haploid nuclei
27. Pollen tube release male gametes into
A) Cytoplasm of Egg cell
B) Nucleus of Egg cell
C) Cytoplasm of Synergids
D) Cytoplasm of Antipodals
28. Which of the following is incorrect about double fertilization?
A) One male gamete fuse with nucleus of egg cell
B) Syngamy results into dyad of cells
C) Second male gamete move toward polar nuclei
D) Triple fusion results into PEN
29. The emasculated flowers are bagged to
A) Protect flower from strong sunlight
B) Protect flower from rain
C) Protect flower from unwanted pollen
D) Protect flower from insects
30. Filiform apparatus is present at
A) Micropylar part of synergid
B) Chalazal part of synergid
C) Micropylar part of antipodal
D) Chalazal part of antipodal
31. Production of unisexual flowers on a plant assures prevention of
A) Autogamy only
B) Autogamy and geitonogamy
C) Geitonogamy only
D) Autogamy and Xenogamy
32. Monoecious plants assure
A) no autogamy
B) no autogamy and geitonogamy
C) no autogamy and xenogamy
D) no geitonogamy and xenogamy
33. Xenogamy is
A) Functionally self-pollination and genetically cross-pollination
B) Genetically self-pollination and functionally cross-pollination
C) Cross-pollination both genetically and functionally
D) Self-pollination both genetically and functionally
34. Typical embryo-sac of angiosperm at maturity is –
A) 8 celled, 8 nucleate
B) 7 celled, 8 nucleate
C) 8 celled, 7 nucleate
D) 7 celled, 7 nucleate
35. Chalaza end represent –
A) Basal part of ovule
B) Apical part of ovule
C) Basal part of ovary
D) Apical part of ovary
PART B
36. Arrange microsporangial wall in sequence of outside to inside
A) Epidermis, middle layer, endothecium, tapetum
B) Epidermis, endothecium, middle layer, tapetum
C) Epidermis, middle layer, tapetum, endothecium
D) Endothecium, middle layer, tapetum, epidermis
37. What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its roots tip cells?
A) 21
B) 42
C) 63
D) 84
38. Embryo sac is also known as
A) Microgametophyte
B) Megagametophyte
C) Microsporangium
D) Megasporangium
39. How many microspores mother cell will produce 1000 microspores?
A) 100
B) 200
C) 250
D) 500
40. Double fertilization involves
A) Fusion of secondary nucleus with both male gametes
B) Fusion of secondary nucleus with one male gamete
C) Fusion of one polar nucleus with one male gamete
D) Any of above, depending on species
41. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
A) Lignin
B) Cellulose
C) Cuticle
D) Sporopollenin
42. When the other floral parts are arranged at the base of the gynoecium, the flower is called
A) Perigynous flower
B) Epigynous flower
C) Hypogynous flower
D) None of these
43. In the fully organized polygonum type of embryo sac, what is the ratio of haploid, diploid and triploid nuclei?
A) 6: 1: 0
B) 6: 0: 1
C) 3: 1: 3
D) 3: 2: 3
44. What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation of male gametes from pollen grains?
A) 2: 1
B) 3: 1
C) 3: 2
D) 2: 3
45. There are 10 flowers in one individual plant of Crotalaria. In each microsporangium of every stamen of all the flowers, there are 30 microspore mother cells. How many pollen grains are formed from that plant?
A) 48,000
B) 24,000
C) 10,000
D) 4,000
46. Match the following ovular structure with post fertilization structure and select the correct alternative.
A. Ovule 1. Endosperm
B. Funiculus 2. Aril
C. Nucellus 3. Seed
D. Polar nuclei 4. Perisperm
A) A = 2, B = 3, C = 4, D = 1 B) A = 2, B = 3, C = 1, D = 4
C) A = 3, B = 2, C = 4, D = 1 D) A = 3, B = 2, C = 1, D = 4
47. Pick out the wrong statement.
A) Double fertilization is unique to gymnosperms and monocotyledons
B) Sequoia, a gymnosperm, is one of the tallest trees
C) Phaeophyceae members possess chlorophyll a, c, carotenoids and xanthophylls
D) Moss is gametophyte which consists of two stages namely, protonema stage and leafy stage
48. The arrangement of the nuclei in a normal embryo sac in the dicot plants is
A) 2 + 3 + 3
B) 3 + 2 + 3
C) 2 + 4 + 2
D) 3 + 3 + 2
49. In nature, cleistogamous flowers are
A) Wind pollinated
B) insect pollinated
C) Self-pollinated
D) bird pollinated
50. Which one of the following statements is wrong?
A) Intine is made up of cellulose and pectin
B) Vegetative cell is larger than generative cell
C) Pollen grains in some plants remain viable for months
D) When pollen is shed at two-celled stage, double fertilization does not take place
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ANSWER KEY- SEXUAL REPRODUCTION IN FLOWERING PLANTS
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